Signal-receiver.



.G. A. BALS.

SIGNAL RECEIVER.

APYL'IOATION FILED APBHM, 1911.

1 ,1 1 6,537. Patented Nov. 10, 1914.

UNITED STATES PATENT orrion T CPI-TABLES A. BALS, OF CHICAGO, ILLINOIS,

ASElIGNOIR, BY MESNE ASSIGNMENTS, TO

FRANK B. COOK COMPANY, OF CHICAGO. ILLINOIS, A CORPORATION OF ILLINOIS.

SIGNAL-RECEIVER.

Specification of Letters Patent.

To all who 17bit may comer/1 Be it known that 1, CHARLES A. Bans,citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented a certain new and usefulImprovement in Signal-Receivers, of

ploying centrally or intermediately pivoted armatures carrying thesignal producing devices or clappers and operating switching devices foralternately including and excluding the operating coils of thesignalreceivers in and from circuit. a

My invention has for its object the provision of an improvedconstruction whereby the armatures may have better control over theswitching devices whose operations they govern.

My invention is shown in the accompanying drawing illustrating thepreferred embodiment thereof in which- Figure 1 is an elevation of myimproved signal receiver. Fig. 2 is a plan viewof the structure shown inFig. 1, Fig. 3 is a sec tional view on line 3-3 of Fig. 1, and Fig.

1 is a detailed view inelevation showing the armature and switchingmechanism more plainly.

Like parts are indicatedby similar characters of reference throughoutthe different figures.

The signal. receiver illustrated is an electromagnetic bell includingtwo gongs 1, mounted upon a board 2, and operated upon by a clapper 3normally held midway be tween the gongs by means of the spring mechanismof my invention which readily adapts itself to this purpose. The stem4.- upon which the clapper is mounted is carried upon a bent finger 5that is preferably integrally formed with, and which projects outwardlyfrom the armature 6 that is mounted to face the lower poles of themagnet spools 7 that are mounted upon the lower face of the board 2. Thetwo cores of the spools 7 are included in magnetic circuits, themagnetic circuit of the left hand "spool comprising the horizontalbranch of armature on the other side. lingers, say the finger 11,carries a plug or are brought together as illust Med and carry the pivotpin 10 located considerably above the armature and midway between itsends, this pin pivotally supporting the armature by passing into thefinger projecting upwardl y from the arnlature on one side and thefinger l1 projecting upwardly from the One of these body of insulatingmaterial 12 which is interposed between and normally engages twoPatented Nov. 10, 1914. Application filed April 2 1, 1911. Serial No.623,041.

springs 18 141: by which the stem 4: is held in central position whenthe signal receiver is normal. or idle. These springs also constituteterminals for the windings of the spools 7, one spring constituting aterminal for one spool winding and the other spring a terminal for theother spool winding. The remalning termlnals of these spool.

windings are in common connection with a key 15 adapted when actuated tobecome connected with one terminal of a battery 16, the other terminalof which is connected with a contact 17 through the frame of the bell.This contact 17 is carried by and pro jects below the armature 6 and isnormally in engagement with the lower ends of the springs 1.3 1 1 so asto normally centrally position the clapper. By means of the circuitillustrated the battery 16 is brought into association with the twospools 7 by means of the keylii. The springs 13 and 14: are mounted attheir upper ends and, as illustrated, are free to swing at their lowerends. When the bell is idle the contacts 13, 14, 17 are in electricalconnection and when the key 15 is depressed one or the other of thespools will predominate in attracting the armature so as to swing it oneway a limited distance, this movement culminating in a separation of thecontacts that previously closed circuit through the spools toward whichthe armature moved, whereupon the companion spool will reverse themovement of the armature and bring the armature into the position inwhich the circuit through this latter spool will be opened, whereafterthe first spool will again attract the armature, these operationscontinuing until the key 15 is released. NVhile one battery common tothe two spools is shown I do not limit myself to this arrangement.

The pivot 10 is located between the body of insulating material 12 andthe armature 6 and consequently the contact 17 is carried by thearmature whereby wide relative movements, between the contact 17 and thetwo contacts 13 14 are assured. For example, assume that the armature ismoving in a clockwise direction. The body of insulating material 12 willengage the spring 14 and move it to the right while at the same time thearmature itself carries the contact 17 to the left. Upon the reversemovement of the armature the left hand spring 13 is moved to the leftand the contact 17 is moved to the right. 7

The advantage of my improved mechanism will be appreciated by thoseskilled in the art.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent the following:

magnetic spools; an armature which is pivotally mounted between itsends; two springs 13 14 connected with terminals of the spools; anelement 12 interposed besprings and carried by the armature; and acontact element 17 also carried by the armature and cooperating with theaforesaid springs for controlling the circuit arrangethe armature swingsbeing located between the elements 12 and 17 while the springs are mentwith the elements 12 and 17, the elemounting for the springs and theaxis of movement of the armature. I i

In witness whereof, I hereunto subscribe my name this eighth day ofApril A. D.

. Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents.

Washington, D. G.

A signal receiver including two electro- 3 tween and in actuatingrelation with said a? ment of the spools, the point about which i:

mounted in position each to have engagement 12 being interposed betweenthe

